Answer:
Cascade Range o Cascade Mountains
Explanation:
Cascade Range o Cascade Mountains is a large mountain range in the western part of North America that extends from southern British Columbia through the states of Washington and Oregon to northern California.
It includes both non-volcanic mountains and the sharp tops of North Cascades, as well as important volcanoes such as the High Cascades.
A. Earths atmosphere contains 78 percent oxygen, which is essential for life.
